Why Have Americans Stopped Having Babies?

From James Hamblin at The Atlantic: “According to a CDC report, the number of babies born per female in the U.S. is the lowest ever. That rate is known as the national fertility rate (even though it measures reproduction, not the capacity for reproduction—fertility as it’s used colloquially). It has been tracked since 1909, and it has dropped more than 10 percent since 2007.”